Improvement in sheit-metebs



uiten gisten etent ffice.

JOEL n. WEAVER, or TEoY, NEW-YORK, l AssIeNoE To HIMSELE, o.' A.sHEEwooD, AND' L. s. BUNNELL, or SAME PLAGE.

Letters Patent No. 80,888, dated August 1l, 1868.

IMPROVEMENT 1N ySPIRIT,-METERS.

dlgs tlgetulr nicht tu iu tigen Entert ateut 'mit Mating and ut tirarme.

To ALL wnoM IT MAY o oNcERN;

Beit known that I, JOEL DrWEAvER, of Troy, in the county of Rensselaer,andState of New York, have invented a-new and useful Improvement inSpirit-Meters; and I do hereby declare that the following is a full,clear, and exact description thereof, which will enable others skilledin theart to make and use the same, reference being had to theaccompanying drawings, forming part ofthis specification, in which-Figure' 1 represents a plan view of my improved machine.

Figure 2 represents a longitudinal elevation, and

Figure 3 vrepresents a plan of the valve-seat, showing the ports and thevalve.

Similar letters of reference indicate corresponding parts.

The nature of this invention relates to improvements` in that class ofmeters for measuring iuids which consist of a piston working within acylinder.

It consists ciV an improved arrangement of mechanism for operating thevalve; also in an improved Valve.

Hitherto this class of meters have been found to some extentobjectionable, in consequence of the imperfeet operation of the valves,which it is the objectoi' my invention to overcome. 4

On reference to thedrawings, Arepresents a cylinder, provided with apiston, B, the rod C of which projects through stufng-boxes at bothends, andwhicli carries at each' 'end a curved arm, D,'securelyconnected thereto.

' E represents a slide-rod supported by the said arms in a verticalplane above the said piston-rod.

F represents guides rising upward from the top of the cylinder,` andprovided with grooves, wherein the said slide E is reciprocated bythepiston-rod. I A

i G represents a tube which is. supported by brackets, H, projectingfrom the arm E, one at each end; a reciprocating movement is thereforecommunicated to the said tube by the slide E.

represents the valve-chest, which is of cylindrical form, and having avertical axis. -In the bottom of the said valve-chest are the ports. ais the port communicating with the receiving-tube b, al and a2 the portslead-v ing to the cylinder, and a3 the exhaust-port.

K represents a` circularrvalve, which is itted to work steamftight inthe cylindrical valve-chest I, and arranged to oscillate in a horizontalplane. It is provided with a curved opening, e, throughit, in a verticaldirection, and a recess, d, in its lower face, of thessame size and formof the opening, and on the opposite side to the same. The said valve isalso providedv with a vertical stem, e, which is seated in a stepfat itslower end in the bottom of the valve-chest. The upper end, projectingthrough astuiiing-box in the cap of the chest, is connected to an arm,f, tlio outer end of which projects through a central opening'in thetube G. The hub of the said arm is provided with a vertical segmentalspur or iiange,'g, having two radial grooves, gl andgz, through it. Theportion-h of the flange, which separates the grooves, is not as highasthe outer portions thereof, k1

and h2.

The slide-rod E is provided with two notches, d and cl', in its loweredge, and the tube G is provided with spiral springs K and K', one inveach end, arrangedto bear upon each side of the armfof the valve K.

When the valve is set Vin position, care is taken to arrange it so thatwhen the slideba'r rests in the groove g2 of the iiangc g, the passage Cwill be coincident with -the'receiving-port a, and the port a2, leadinginto the cylinder. The iluid to bc measured being'now admitted throughthe pipe b, will ilow through the ports a and a2 into the cylinder,whereby the piston will be driven to the left, therchypressingthe springK against the right side of the arm f. As the pistonarrives near the endof' its stroke in that direction, the notch d in the slide E will bebrought to a position coincident with the spur h of the iiangefg,,thereby relieving the' resistance .it has maintained against the actionof the spring K', which will instantly throw the said arm around,bringing the groove g coincident with the slide-rod, and changing the`position-oi` the valve, so as to change the passage of' the iluid fromport a to the port al, and opening thc port a? to the exhaust ai. Thepiston will now move to eases 2 the right, and the spring K will becompressed against the varmy", ready to change the valve beck again tothe first-named position as soon as the notch d arrives at a pointcoincident with the stud' 71.. This operation will Y without regardtothe amount of pressure.

'raised thereby in a very simple manner.

continue as long as the luid is fed to the machine. l

A registering-apparatus may bc actuated from the reciprocating parts ofthe machine, in any suitable manner. l y

As the action of the valve is sudden and positive, the utmost accuracyofmeasurement may be attained In practice, a metal packing may beprovided atthe upper end of the valve, that will, when laid upon thevalve, be slightly higher than the walloi` the valve-chest I, upon whichthe cap ofthe chest may be accurately adjusted, the joint between thecap and the top of the chest being packed with a yielding packing. p f

In consequence of the passage C being made entirely through thevalve,.the upward pressure which would be due to the area of the same,were it a recess, as is provided for the exhaust, is entirely removedfrom the valve and expended upon the packing above, and the downwardpressure 'is expended against the valve-seat and the ports, whereby theValve is always balanced, irrespective ofthe amount of pressure of thepropelling medium.'

v My improved apparatus may also be used with great facility as a motor,and may be operated either hy Water 'or steam, and will be foundespecially usefulfor propelling pumps for raisingwaterror as -a ram.

A pump-cylinder may be'attached to one of the piston-heads, or may becast with it, 4or, if a double-acting pump is desired, such cylindersmay be attached to each piston-head, and the piston-rod be provided neareacfh end with plungers for the pumps, and with reduced prolongationsprojecting through stuiiing-boxes at the outo'r ends of the pumps, forcommunicating motion to the rodE, and a portion of the water foroperating it may be Having thus'dcscribed my invention, I claim as new,and desire to secure by Letters Patent- 1. The improved valve-actuatingmechanism, substantially such as herein shown and described for thepurpose set forth. 4

2. The improved valve K, in combination with the valve-chest I, providedwith ports, 'arranged substantially as and forth@ purpose described.

-3. The combination of the sliding rod E, valve-stem e,and-spring-aetuated armf, substantially as and for the purposedescribed. *l i 4. The combination, with the armf, of the tube G,provided with the springs K and K', and actuated by the slide E,substantially as and for the purpose described.

The above specification of my invention signed by me, this 23d day ofApril, 1868.

OEL D. WEAVER.

Witnesses: f

WM. F. MeNAMARA, ALEX. F. ROBERTS.

